US4927583A - Process for the manufacture of polyamide composite material reinforced with long fibers - Google Patents

Process for the manufacture of polyamide composite material reinforced with long fibers Download PDF

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Publication number
US4927583A
US4927583A US07/095,047 US9504787A US4927583A US 4927583 A US4927583 A US 4927583A US 9504787 A US9504787 A US 9504787A US 4927583 A US4927583 A US 4927583A
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US
United States
Prior art keywords
fibers
prepolymer
pultrusion
oligomer
impregnated
Prior art date
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Expired - Lifetime
Application number
US07/095,047
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English (en)
Inventor
Michel Lottiau
Michel Glemet
Gilles Cognet
Alain Causier
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Arkema France SA
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Atochem SA
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Assigned to ATOCHEM reassignment ATOCHEM ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CAUSIER, ALAIN, GLEMET, MICHEL, COGNET, GILLES, LOTTIAU, MICHEL
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/525—Component parts, details or accessories; Auxiliary operations
    • B29C70/528—Heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • C08G69/16—Preparatory processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers

Definitions

  • the present invention pertains to a process for the manufacture of a composite material made of polyamide reinforced with long fibers.
  • the process involves the coating of the long fibers with a polyamide prepolymer or oligomer and subsequent heating of the product obtained to achieve polymerization before pultrusion.
  • thermoplastic resin such as a polyamide
  • plastic resins reinforced with fibers are obtained with resins reinforced with long fibers.
  • this technique one manufactures rectilinear or curved composite profiles which are highly reinforced in the main direction and whose mechanical characteristics according to this direction can come close to those of some metals, assuming a coherent selection.
  • a vital and difficult feature of this technique is the impregnation of the fibers.
  • the difficulties would not be so great when the fibers impregnated are thermally hardening resins such as epoxides or polyesters, which at ambient temperature are frequently found in the form of liquids or in solution.
  • the impregnation of the fibers with a thermoplastic resin that is solid at ambient temperature and has a relatively high melting point is more difficult.
  • thermoplastic polymers must be kept at high temperatures to be fluid enough to achieve satisfactory impregnation of the fibers, or highly diluted in a solvent, which would involve the problem of eliminating the solvent.
  • the technique according to the invention remedies these shortcomings. It involves the impregnation of the fibers with a polyamide prepolymer or oligomer, which at each end of the molecular chain has a reactive functional group that can react from one molecule of oligomer or prepolymer to another, and then subsequent heating results in the lengthening of the polymer chain before the shaping of the entire mass of material by pultrusion.
  • the reactive functional groups at the ends of the chain usually correspond to one amine functional group and one carboxylic acid functional group per molecule.
  • These low-molecular-weight oligomers of prepolymers present the advantage that they are fluid at their melting temperature.
  • These polyamide-sequence compounds are usually obtained from caprolactams, hexamethylenediamine and adipic acid, hexamethylenediamine and sebacic acid, dodecalactam and undecanoic acid. They also could be polyamides-imides. Examples of such products are the oligomers or prepolymers of polyamides 6, 6.6, 6.10, 6.12, 11 and 12.
  • oligomers or prepolymers that are particularly recommended in the invention correspond to the general formula: ##STR1## in which: m is a number from 5 to 11; and
  • n is a number from 10 to 40.
  • the fibers preferably in the form of long fibers, that is, continuous fibers or rovings generally made of glass, carbon or aramides such as KEVLAR fibers, are impregnated by circulation in the prepolymer or oligomer, preferably in a powder or molten form. If the impregnation is carried out in a powder, this latter is preferably in fluidized form.
  • the fluidization is carried out according to the known powder fluidization methods.
  • the impregnated fibers are heat treated, preferably at a temperature ranging from 190° C. to 350° C., so as to complete the impregnation of the fibers and to increase the length of the polyamide chains.
  • the preferred oligomers or prepolymers according to the preceding formula are being transformed into polymers when the value of n ranges between 50 and 80.
  • the polymer impregnated fibers are drawn through a die kept at a temperature such that the material acquires a temperature of from about 190° C. to 300° C. To preserve a good final structure of the profiled product obtained, it is recommended to cool the drawn material in a second die kept at ambient temperature.
  • the impregnated fibers are usually drawn through a conventional pultrusion setup at a rate ranging from 0.3 to meters per minute.
  • a cube-shaped tank with 500 mm sides, provided with a porous bottom is loaded with 25 kg of a prepolymer powder with the formula: ##STR2##
  • This powder has a granulometric distribution ranging from 80 to 200 microns.
  • the powder is fluidized by applying a high pressure of 2 bars of compressed air at the bottom of the tank.
  • Eighteen rovings of glass fibers are passed through the fluidized bed at a rate of 0.5 m/minute.
  • the impregnated fibers are preheated under an infrared panel before being drawn through a 100 ⁇ 200 mm die maintained at 270° C.
  • the material crosses a 50 ⁇ 50 mm shaping die maintained at 240° C. and located at a distance of ca. 500 mm from the first die.
  • the final shape of the profile is achieved by passing the material through a last 50 ⁇ 100 mm shaping die which operates at ambient temperature.
  • 4 ⁇ 10 mm bars are prepared on the material obtained.
  • the bars are subjected to three point flexing tests according to standard ISO R-178.
  • the YOUNG E modulus is 22 GPa
  • the breaking force is 425 MPa.
  • Example 1 One operates under the conditions of Example 1 with a prepolymer of Example 3, but replacing the glass fibers with KEVLAR fibers.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Measurement Of Radiation (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US07/095,047 1986-09-17 1987-09-09 Process for the manufacture of polyamide composite material reinforced with long fibers Expired - Lifetime US4927583A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8612997 1986-09-17
FR8612997A FR2603891B1 (fr) 1986-09-17 1986-09-17 Procede de fabrication de materiau composite a base de polyamide renforcee de fibres longues

Publications (1)

Publication Number Publication Date
US4927583A true US4927583A (en) 1990-05-22

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US07/095,047 Expired - Lifetime US4927583A (en) 1986-09-17 1987-09-09 Process for the manufacture of polyamide composite material reinforced with long fibers

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US (1) US4927583A (da)
EP (1) EP0261020B1 (da)
JP (1) JPH07115413B2 (da)
KR (1) KR930002462B1 (da)
CN (1) CN1022189C (da)
AT (1) ATE59055T1 (da)
CA (1) CA1323161C (da)
DE (1) DE3766678D1 (da)
DK (1) DK167930B1 (da)
ES (1) ES2005311A6 (da)
FI (1) FI86736C (da)
FR (1) FR2603891B1 (da)
PT (1) PT85731B (da)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5374385A (en) * 1991-11-28 1994-12-20 Monsanto Europe S.A. Nylon pultrusion process
US5424388A (en) * 1993-06-24 1995-06-13 Industrial Technology Research Institute Pultrusion process for long fiber-reinforced nylon composites
US5672306A (en) * 1993-11-12 1997-09-30 Kimberly-Clark Corporation Method of making an adsorbent fibrous nonwoven composite structure
US20060128851A1 (en) * 2001-08-07 2006-06-15 Fishburn James R Polycarbonate resin compositions and articles therefrom
US20080020219A1 (en) * 2003-12-19 2008-01-24 Franck Bouquerel Composite Materials Comprising a Reinforcing Material and a Thermoplastic Matrix, Precursor Compound Article of Said Materials and Products Obtained Using Same
CN100381498C (zh) * 2005-05-30 2008-04-16 中国石化仪征化纤股份有限公司 缩聚反应型长纤维增强热塑性树脂的制备方法
US9139707B2 (en) 2012-06-01 2015-09-22 Arkema France Thermoplastic composite material made from natural fibers
US9688844B2 (en) 2011-04-12 2017-06-27 Mitsubishi Gas Chemical Company, Inc. Polyamide resin-type composite material and method for producing same
US9752029B2 (en) 2012-10-23 2017-09-05 Arkema France Thermoplastic composite material made of a semi-crystalline polyamide and method for manufacturing same
US10000662B2 (en) 2011-10-25 2018-06-19 Arkema France Thermoplastic composite material reinforced with synthetic fibers and manufacturing process
US10240016B2 (en) 2014-04-15 2019-03-26 Arkema France Method for a composite material impregnated with thermoplastic polymer, obtained from a prepolymer and a chain extender
US10344126B2 (en) 2014-04-15 2019-07-09 Arkema France Method for manufacturing a thermoplastic material made from semi-crystalline polyamide
US10597500B2 (en) 2016-07-15 2020-03-24 Mitsubishi Gas Chemical Company, Inc. Method for producing composite material and composite material
US10738170B2 (en) 2015-06-24 2020-08-11 Arkema France Method for the open-mold production of a fiber-reinforced semi-crystalline polyamide matrix composite material from a prepolymer reactive precursor composition
US10961362B2 (en) 2015-12-10 2021-03-30 Arkema France Method for producing a fibre-reinforced polyamide matrix composite material from a reactive prepolymer precursor composition
US11578170B2 (en) 2014-04-15 2023-02-14 Arkema France Thermoplastic composition made from a polyamide polymer obtained from a prepolymer and a chain extender and manufacturing method

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752306A1 (en) * 1995-07-05 1997-01-08 Monsanto Europe S.A./N.V. Manufacture of pultruded articles
WO2003014198A1 (de) * 2001-08-06 2003-02-20 Ems Chemie Ag Verfahren zur herstellung von composite-teilen
CN100355808C (zh) * 2004-01-02 2007-12-19 上海杰事杰新材料股份有限公司 连续长纤增强反应型尼龙树脂及其制造方法
DE102005023419B4 (de) 2005-05-20 2007-02-22 Ems-Chemie Ag Polyamid-Oligomere und deren Verwendung
DE102005023420A1 (de) 2005-05-20 2006-11-23 Ems-Chemie Ag Polyamidformmassen mit verbesserter Fliessfähigkeit, deren Herstellung sowie deren Verwendung
CN100424133C (zh) * 2005-06-28 2008-10-08 上海杰事杰新材料股份有限公司 长纤维增强的耐高温聚酰胺复合材料的制备方法
FR2953847B1 (fr) 2009-12-14 2012-12-14 Rhodia Operations Article composite a base de resines polyamides de faibles masses moleculaires
EP2386397B2 (de) † 2010-05-11 2020-04-29 Basf Se Pultrusionsverfahren, pultrudiertes Halbzeug und seine Verwendung
CN102796258A (zh) * 2012-07-25 2012-11-28 四川大学 一种原位增强半芳香聚酰胺复合材料的制备方法
FR3019827B1 (fr) 2014-04-15 2020-10-09 Arkema France Composition et procede pour materiau composite avec impregnation par polyamide semi-cristallin, issu d'un prepolymere et d'un allongeur de chaine
FR3019828B1 (fr) 2014-04-15 2020-09-18 Arkema France Composition et procede pour materiau composite avec impregnation par composition reactive d'un prepolymere polyamide et d'un allongeur de chaine diepoxyde
FR3067640B1 (fr) 2017-06-14 2022-06-24 Arkema France Procede de fabrication d'une piece en materiau composite
WO2018229114A1 (fr) 2017-06-14 2018-12-20 Arkema France Procédé de fabrication d'une pièce en matériau composite a partir de prépolymères
FR3073857B1 (fr) 2017-11-21 2019-10-11 Arkema France Composition et procede pour materiau composite avec impregnation par composition reactive d'un prepolymere polyamide et d'un allongeur de chaine diepoxyde
FR3128154B1 (fr) 2021-10-15 2024-05-10 TDCL Investissement Matériau composite

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5492755A (en) * 1991-11-28 1996-02-20 Monsanto Company Product formed by a nylon pultrusion process
US5374385A (en) * 1991-11-28 1994-12-20 Monsanto Europe S.A. Nylon pultrusion process
US5424388A (en) * 1993-06-24 1995-06-13 Industrial Technology Research Institute Pultrusion process for long fiber-reinforced nylon composites
US5672306A (en) * 1993-11-12 1997-09-30 Kimberly-Clark Corporation Method of making an adsorbent fibrous nonwoven composite structure
US20060128851A1 (en) * 2001-08-07 2006-06-15 Fishburn James R Polycarbonate resin compositions and articles therefrom
US20080020219A1 (en) * 2003-12-19 2008-01-24 Franck Bouquerel Composite Materials Comprising a Reinforcing Material and a Thermoplastic Matrix, Precursor Compound Article of Said Materials and Products Obtained Using Same
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JPH07115413B2 (ja) 1995-12-13
EP0261020A1 (fr) 1988-03-23
PT85731A (fr) 1987-10-01
FI874046A0 (fi) 1987-09-16
FI86736B (fi) 1992-06-30
KR880004009A (ko) 1988-06-01
FR2603891A1 (fr) 1988-03-18
JPS6382731A (ja) 1988-04-13
ATE59055T1 (de) 1990-12-15
EP0261020B1 (fr) 1990-12-12
KR930002462B1 (ko) 1993-04-02
FI874046A (fi) 1988-03-18
DE3766678D1 (de) 1991-01-24
DK167930B1 (da) 1994-01-03
DK485187D0 (da) 1987-09-16
FI86736C (fi) 1992-10-12
DK485187A (da) 1988-03-18
PT85731B (pt) 1990-08-31
CN1022189C (zh) 1993-09-22
FR2603891B1 (fr) 1990-12-14
CN87106424A (zh) 1988-03-30
ES2005311A6 (es) 1989-03-01
CA1323161C (fr) 1993-10-19

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